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The Sculptor Galaxy

Taken over 3 different nights dodging the clouds, I scavenged a mere 5 hours of data. Wasn't quite able to get as clean an image as I'd like. Interestingly I could not tell a difference between 1hr or 2hr integrations of the luminance. The galactic edge was consistently noisy. The BG suffers from a bit of posterization that was there since the linear phase.

Acquisition Details:

Scope: GSO 8" F/4, flocked, 2" moonlite, DIY AutoFocuser, DIY Secondary Dew Heater Coma Corrector: SkyWatcher Aplanatic/Quattro Camera: ZWO ASI 1600MMC PRO (Image scale ~1"/pixel) Mount: EQ6-R Guide Scope: ZWO 60mm Guide Cam: QHY5LIIC 66x120s L (ZWO) 25x120s R (ZWO) 25x120s G (ZWO) 24x120s B (ZWO) Roughly 5 hr total integration. All at gain 0, 21 offset, -15 degrees celsius. Acquired with the NINA imaging suite. Guided with PHD2. Mount interface: EQMOD

Processing Details:

Pre-Processing: All Lights flat and dark calibrated. SFS/Star Aligned/Image Integration Luminance Processing: Crop, DBE, Decon, TGV Denoise, MMT HT Stretch LHE on galactic core with range mask ACDNR to clean up galaxy edge RGB Processing: Crop, DBE, Linear Fit, RGB COMB, ABE TGV then MMT Arcsinh stretch then HT stretch PCC LRGB Combination, SCNR Many curve transformations for contrast, hue and saturation.
Date Created: 2019-09-29
Date Posted: 2019-10-31